Changes in Cognition Functions and Depression Severity After Bariatric Surgery: A 3-Month Follow-up Study
Bibliographic record
Abstract
Background: Changes in cognitive profile, such as memory and other functions in patients with morbid obesity after bariatric surgery have been reported in the literature with inconsistent results. Objectives: This study aimed to evaluate cognitive changes, executive function and depression severity before and after bariatric surgery in patients with morbid obesity. Methods: In this prospective cohort study, 70 patients with morbid obesity (40 patients undergoing bariatric surgery and 30 patients in the waiting list) referred to the Rasool Akram Medical Complex, obesity clinic, Tehran, Iran, in 2016 entered the study. The two groups were assessed using the Wechsler Memory Scale (WMS) (consists of 7 subscales and assesses memory), the Wisconsin Cart Sorting test (WCST) (includes 64 cards and assesses cognitive skills), the Hamilton Depression Scale (HAM-D) (for measuring depression) and bariatric analysis and reporting outcome system (BAROS) questionnaire (scale to report of the therapeutic results of bariatric surgery and including the three criteria of the weight loss percentage, the change in health state, and the quality of life) at the beginning of the study and three months after the surgery. Moreover, the Bariatric Analysis and reporting outcome system (BAROS) questionnaire was filled three months after surgery. Results: The average changes in WMS score (P = 0.043), working memory (P = 0.002), HAM-A (P = 0.032), weight, and BMI (P = 0.0001) in the surgery group were significantly higher than the control group. There was a significant positive correlation between change in the number of preservative errors in WCST within the surgery group with BAROS score (P = 0.004). Moreover, there was a significant correlation between changes in the score of WMS and those in BMI in the surgery group. Conclusions: Bariatric surgery is associated with improvements in some cognitive functions and worsening of depressive scores in patients with morbid obesity.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".